There are other benefits of fiber, such as transmitting non-Ethernet signals such as USB, DisplayPort, HDMI, etc. You can run these things over Ethernet, but they are really shoddy and unreliable.
It allows you to centralize more things. For example, you could just have a monitor, keyboard, mouse, and a hub in a room for a computer, where the computer is actually somewhere else (such as a server room).
It allows you to centralize more things. For example, you could just have a monitor, keyboard, mouse, and a hub in a room for a computer, where the computer is actually somewhere else (such as a server room).